This is literally the only truly important part after a certain threshold. I have a 34”, 1440p monitor and the text is noticeably better than any 1080p screen. It’s entirely legible and 4K would not provide a new benefit except maybe a lighter wallet. It’s also 100Mhz which is again beyond the important threshold.
The only time I can see 4K being essentially necessary is for projectors because those screens end up being massive. My friend has a huge 7’ something screen in the basement so we noticed a difference but that’s such an outlier it should really be a footnote, not a reason to choose 4K for anything under 5’(arbitrary-ish number).
Nalivai@lemmy.world 1 month ago
If my quick calculations are correct, the 70 inches screen at 1080p has a pixel size of about 0.7 mm give or take, where 4k would be about 0.1-0.2.
0.1mm is a smallest size of a thing a human could potentially see under very strict conditions. A pixel smaller than a millimeter will be invisible from a meter away. I really, really doubt its humanly possible to see the difference from the distances a person would be watching tv.
The thing is, the newer 4k tvs are just built better, nicer colour contrast, more uniformed lighting, clearer glass, and that might be the effect you’re seeing
michaelmrose@lemmy.world 1 month ago
Basically you are in a study which calculated for you what people ought to be able to see and you insisted on redoing the calculation yourself incorrectly. The study says people factually can distinguish up to 94 pixels per degree. a 70" screen at a meter away is 24 PPD. You yourself could have easily eye balled 2 screens and come to the correct conclusion but are instead asserting nonsense.
Did you notice that FHD tvs larger than 40" literally don’t exist in stores? If people literally couldn’t see more than 24 PPD than at the more typical 10 feet viewing distance a 70" screen at 640x480 would be just as good as a 70" 1080p was at a meter away! For a 50" you could go down to 320x480! Still 24PPD
Sir_Premiumhengst@lemmy.world 1 month ago
Uh… Hol up. So if we can maybe see down to 0.2 mm and the 1080p screen has 0.7 mm pixels… That’s pretty much what I’m saying. 1080p is noticeably grainy.
The text in 4k looks crisper. I concur I can’t count individual pixels, but reading game menus in 1080p feels rougher and makes me squint. Reading in 4k feels more like reading on print paper or a good e-eeader.
This and yes, the build quality of newer screens also contributes.
Nalivai@lemmy.world 1 month ago
The point is that under the best conditions up close centimeters away from your face you can just about see 0.1. And we’re talking 4 times that two meters away.
Text on the modern tv does look better though. Bu how much of that is that all the technology got better, colours are more uniformed, the light emmiters are more consistent, there is less dead space, etc.
It’s like that old gimmick with cameras and megapixels. Cameras were getting better, but not because the number of megapixels was bigger, still that’s the only number everyone cared about, so they started selling numbers that didn’t make any physical sence.